Method and means for supporting cores



Feb. 2, 192 1,571,535

W. WASHINGTON METHOD AND MEANS FOR SUPPORTING CORES Filed March 5, 1923 cooooooooooo Patented Feb. 2, 1926.

UNITE stars WILLIAM WASHINGTON, 0F DUNKIRK, YORK.

METHOD AND MEAITS FOR SUPPURTING COB/ES.

Application filed March 5, 1923.

To all whom it may concern:

Be it known that I, iterati Wasnrmr- Ton, a citizen of the United States, residing at Dunkirk, in the county of Chautauqua and State of New York, have invented a certain new and useful Improvement in Methods and Means for Supporting Cores, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to a novel method and means for supporting cores in the manufacture of cast metal radiators.

At the present time, the core is supported by a plurality of chaplets, from ten to twenty in number, which are inserted 1n the molding sand. These wire chaplets are inserted in the molding sand and after the casting has been completed, they must all be chipped off and when the radiator section is put under what is known as first test, the projecting portions of the chaplets must be flattened or upset, and frequently the ra diator section is found to leak at such points.

These objections are overcome by the method and means which I have devised for supporting the cores at the side edges thereof. Broadly speaking, my invention consists in providing the core at each side thereof with a fusible core support which rests upon the sand of the mold and maintains the core in its proper position and being a fusible metal, is, during the casting operation, fused and absorbed by the molten metal and consequently, all work of removing these chaplets from the radiator section or loop is avoided.

The invention consists also in certain details hereinafter fully described and set forth in the appended claims.

In the drawing forming a part of this specification, Fig. l is a plan view of one section of the mold with the core support ed therein according to my improved method and means; Fig. 2 is a sectional view of the mold taken on the line 2-2 of Fig. l: and Fig. 3 is an enlarged detail view of one of the supports.

Tn carrying out my invention, I employ the usual upperand lower half molds 10 and 11, respectively, and between these mold sections there is interposed the core 12 which in the present instance is shaped so as to produce in connection with the mold sections, a radiator loop or section and it will be un- Serial No. 622,749.

derstood that this core is formed with the usual prints 13 preferably at the opposite ends thereof, said prints projecting in opposite directions and seating as they do in the sand in the mold sections, they serve to hold the core from shifting in any direction. For the purpose of properly maintaining the core between the mold sections, 1 provide a plurality of lateral supports 14.- which are preferably in the form of a thin plate of fusible material which is preferably tin and also preferably perforated. These sup ports 14, preferably four in number are inserted in the side edges of the core, two on each side; and these plates are inserted before the cores are baked. When the core is inserted in the mold, these plates rest directly on the sand of the mold and when the other section is placed upon the core, these supports hold the said core in its proper position within the mold. When the molten metal is poured in the radiator loop or section to be formed, the prints produce openings in the sides of the said radiator loops or sections near the upper or lower ends thereof as usual, and as this molten metal flows between the core and mold, it comes in contact with the thin metal supporting plates M and these plates being of fusible metal, the molten metal melts the same and absorbs them and in this man ner products a perfectly clean casting and completely avoids the necessity of cutting off the chaplets heretofore used and punching and upsetting the same as previously described. It will thus be seen that I provide an exceedingly simple and highly eiiicient method and means for supporting the core within the mold and avoiding the necessity of clipping or subsequently treating any re maining portion of said support.

Having thus described my invention, what I claim is:

1. The combination with the upper and lower mold sections, of a core held thercbetween, said core having separate laterally projecting sup 'iorting members at opposite sides thereof adapted to contact with the edges of the mold section and support the core between said sections, said laterally projecting supporting members being of fusible metal which is absorbed during the casting operation.

2. The combination with the upper and lower mold sections, of a core arranged ally from said side edges, said laterally projecting; portions resting upon the contiguous edges the 1110M. sections and thereby: serving to support the core properly posi- %ioue-':i'i'iet\'-.ee1i the sections of the mold, said ii'usibie metallic supp-021 s being fused and zzbsoi'iied during the casting operation.

In testimony whereof, E hereunto ziflix In nature.

WILLIAM XVASHINGTON. 

